This patch adds a "Toggle Unread" link, next to the "Toggle All" link, in the mailbox view, which allows the user to check only the unread mails.
This patch has been made using the 1.4.8 version of SquirellMail.
I should soon post a patch against the 1.4.9a.
Patch for the toggle_unread link
Logged In: YES
user_id=1667581
Originator: YES
File Added: toggle_unread.patch